Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Storage of combined sewage in a marine waterbody. {microfiche} /
Author Dunkers, K. ; Field, R. ; Forndran, A.
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. ;Dunkers (Karl) Engineering Corp., Taby (Sweden). ;New York City Dept. of Environmental Protection.
Publisher US Environmental Protection Agency, Risk Reduction and Engineering Laboratory,
Year Published 1992
Report Number EPA/600/A-92/060
Stock Number PB92-158542
Subjects Sewage
Additional Subjects Combined sewers ; Overflows ; Water storage ; Water pollution control ; Storm sewers ; Storm water drainage ; Hydrology ; Saline water-freshwater interfaces ; Saline water intrusion ; Coastal regions ; Salinity ; Storm water runoff ; Reprints ; Flow balance method ; Water curtains
Library Call Number Additional Info Location Last
NTIS  PB92-158542 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 20 p. : ill. ; 28 cm.
Instead of using conventional storage units, e.g., reinforced concrete tanks and lined earthen basins, which are relatively expensive and require a lot of urban land area, the in-receiving water flow balance method (FBM) facilities use the receiving water body itself for storage volume. The FBM facilities receive and contain urban-storm-induced discharges between flexible plastic, e.g., fiberglass reinforced PVC (polyvinyl chloride) curtains suspended from floating wooden pontoons. The curtains are anchored to the receiving-water bottom by concrete weights. The Flow Balance Method of storage is low cost due to its low-cost materials of construction, i.e., plastic and wood; installation time, i.e., several days to weeks; and the absence of land requirements. Studies show that costs could be about 5 to 15 percent and 40 to 50 percent of conventional concrete tank costs for freshwater and saltwater applications, respectively (without including land costs). The FBM facilities have been operating successfully for approximately ten years for control of separate stormwater entering relatively quiescent freshwater lakes in Sweden, and are able to take ice and wind loads without adverse impact. The objective of the project which the paper discusses is to demonstrate a facility for Combined Sewer Overflow (CSO) storage in a harsh estuarine/marine site having tidal exchange, freezing, and coastal storm phenomena. The prototype demonstration facility located in Fresh Creek, a tributary of Jamaica Bay in Brooklyn, New York, U.S.A. started operation in November 1988. The evaluation includes CSO capturing efficiency under the impediments and flow saltwater and freshwater density differences and curtain leakage; structural ability to endure the harsh coastal marine environment; and floatables and settleable solids removal effectiveness. Interim data (including that from salinity profiling) from several storm-flow occurrences indicates that the saltwater-freshwater stratification phenomenon is enabling the facility to operate effectively and detailed results of the evaluation are presented.
"EPA 600/A-92/060."